dnvm

_dnvm_completions()
{
    shopt -s nullglob
    local cur prev dnvm_command semvers aliases upgrade dnvm_commands
    COMPREPLY=()
    cur="${COMP_WORDS[COMP_CWORD]}"
    prev="${COMP_WORDS[COMP_CWORD-1]}"
    if [ $COMP_CWORD -gt 0 ]; then
        dnvm_command="${COMP_WORDS[1]}"
    fi
    semvers=$(for dir in $HOME/.dnx/runtimes/*; do dirname=${dir##*/}; echo ${dirname#*.}; done)
    aliases=$(for alias_file in $HOME/.dnx/alias/*; do file_name=${alias_file##*/}; echo ${file_name%.alias}; done)
    upgrade="-f -force -u -unstable -r -runtime"

    shopt -u nullglob
    dnvm_commands="upgrade install use exec list alias unalias -h help -help --help update-self"

    if [ ${prev} == dnvm ] ; then
        COMPREPLY=( $(compgen -W "${opts} ${dnvm_commands}" -- ${cur}) )
        return 0
    elif [ ${dnvm_command} == use ] ; then
        COMPREPLY=( $(compgen -W "$semvers $aliases" -- ${cur}) )
        return 0
    elif [ ${dnvm_command} == run ] ; then
        COMPREPLY=( $(compgen -W "$semvers $aliases" -- ${cur}) )
        return 0
    elif [ ${dnvm_command} == exec ] ; then
        COMPREPLY=( $(compgen -W "$semvers $aliases" -- ${cur}) )
        return 0
    elif [ ${dnvm_command} == upgrade ] ; then
        COMPREPLY=( $(compgen -W "$upgrade" -- ${cur}) )
        return 0
    elif [ ${prev} == -r ] ; then
        COMPREPLY=( $(compgen -W "mono coreclr" -- ${cur}) )
        return 0
    elif [ ${dnvm_command} == install ] && [ ${COMP_CWORD} == 2 ]; then
        COMPREPLY=( $(compgen -W "$semvers $aliases latest *.nupkg" -- ${cur}) )
        return 0
    elif [ ${dnvm_command} == install ] && [ ${prev} == -arch ]; then
        COMPREPLY=( $(compgen -W "arm x64 x86" -- ${cur}) )
        return 0
    elif [ ${dnvm_command} == install ] && [ ${COMP_CWORD} -gt 2 ]; then
        COMPREPLY=( $(compgen -W "-a -alias -p -persistent -f -force -u -unstable -r -runtime -arch" -- ${cur}) )
        return 0
    elif [ ${dnvm_command} == alias ] && [ ${COMP_CWORD} == 3 ]; then
        COMPREPLY=( $(compgen -W "$semvers $aliases *.nupkg" -- ${cur}) )
        return 0
    elif [ ${dnvm_command} == unalias ]; then
        COMPREPLY=( $(compgen -W "$aliases" -- ${cur}) )
        return 0
    fi
}
complete -F _dnvm_completions dnvm